srowen commented on a change in pull request #25573: [SPARK-28833][DOCS][SQL]
Document ALTER VIEW command
URL: https://github.com/apache/spark/pull/25573#discussion_r344300721
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File path: docs/sql-ref-syntax-ddl-alter-view.md
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@@ -19,4 +19,78 @@ license: |
limitations under the License.
---
-**This page is under construction**
+### Description
+The `ALTER VIEW` statement changes various auxiliary properties of a view.
+
+
+#### Rename view
+Rename the existing view. If the view name already exists in the database, an
exception is thrown. This operation does
+support moving the views cross databases.
+##### Syntax
+{% highlight sql %}
+ALTER VIEW viewIdentifier RENAME TO viewIdentifier
+viewIdentifier:= [db_name.]view_name
+{% endhighlight %}
+
+
+#### Set view properties
+Set one or more properties of an existing view. The properties are the key
value pairs. If the properties' keys exist,
+the values are replaced with the new values. If the properties' keys does not
exist, the key value pairs are added into
+the properties.
+##### Syntax
+{% highlight sql %}
+ALTER VIEW viewIdentifier SET TBLPROPERTIES (key1=val1, key2=val2, ...)
+viewIdentifier:= [db_name.]view_name
+{% endhighlight %}
+
+
+#### Drop view properties
+Drop one or more properties of an existing view. If the specified keys do not
exist, an exception is thrown. Use
+`IF EXISTS` to avoid the exception.
+##### Syntax
+{% highlight sql %}
+ALTER VIEW viewIdentifier UNSET TBLPROPERTIES [IF EXISTS] (key1=val1,
key2=val2, ...)
Review comment:
Do you really have a =val1 part if unsetting properties? just key1 etc?
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